The boy was shot and killed by police at the scene, but three men were previously charged in connection to the murder.

Those three men were Wednesday charged with further offences, including membership of a terrorist group. The NSW Counter Terrorism Team (JCTT) announced that:

An 18 year old Guildford man -- previously charged with aiding, abetting, counseling and procuring the commission of a terrorist act -- has now been additionally charged with direct a criminal group and also membership of a terrorist organisation.

A 23 year old man from Merrylands -- previously charged with knowingly participate in a criminal group, supply pistol to an unauthorised person, acquire pistol contrary to a Firearm Prohibition Order and hinder discovery of evidence -- has been additionally charged with membership of a terrorist organisation.

A 22 year old man from Marsfield -- previously charged with knowingly participate in the supply of a pistol and knowingly participate in a criminal group -- has been additionally charged with membership of a terrorist organisation.

The men, all held at Goulburn prison, were charged at Bowral Police Station and bail refused. The 22 year old will next appear at Parramatta Local Court on January 14th, the 18 year old will appear at Central Local Court on February 3rd, and the 23 year old will appear at Parramatta Local Court on February 4th.